They vaguely promised during the 2015 election campaign to "save home mail delivery."

Terry Pedwell, Canadian Press

THE CANADIAN PRESS/Darryl Dyck

The Canada Post logo is seen on the outside the company's Pacific Processing Centre, in Richmond, B.C., on June 1, 2017.

OTTAWA — The federal Liberals are terminating a program launched by the former Conservative government to convert existing home mail delivery in Canada to community boxes.

But some 840,000 families who have already started walking down the street for their mail since the conversions began in 2014 won't see door-to-door delivery restored.

The move is expected to upset postal workers who have demanded the post office turn back the clock on mailbox conversions.

It also means Canada Post won't realize savings it estimated at $350 million annually from converting the remaining 4.2 million addresses across the country that still get mail dropped at their doorstep.

Chris Wattie / Reuters
Public Works Minister Carla Qualtrough takes part in a news conference in Ottawa Dec.12, 2017.

At least one analyst says that will hamper the Crown corporation's ability to remain self sustaining as letter mail revenues continue to decline.

Public Services Minister Carla Qualtrough rolled out the new plan for Canada Post today at a sorting plant in Mississauga, Ont.

Under the plan, a task force will be struck to examine how to enhance Canada Post's accessibility program for seniors and people with mobility issues who lost home delivery.

The Liberals vaguely promised during the 2015 election campaign to "save home mail delivery" after an outcry over the community mailbox conversion plan launched by the Conservatives.

Qualtrough also announced changes to the financial rules that drive Canada Post, allowing the agency to make a profit and then re-invest the extra money back into operations to improve services and remain self-sustaining over the long run.